EP1444503A1 - Verfahren und vorrichtung zum räumlich eng begrenzten anregen eines optischen übergangs - Google Patents
Verfahren und vorrichtung zum räumlich eng begrenzten anregen eines optischen übergangsInfo
- Publication number
- EP1444503A1 EP1444503A1 EP02777141A EP02777141A EP1444503A1 EP 1444503 A1 EP1444503 A1 EP 1444503A1 EP 02777141 A EP02777141 A EP 02777141A EP 02777141 A EP02777141 A EP 02777141A EP 1444503 A1 EP1444503 A1 EP 1444503A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- excitation light
- light beam
- partial beams
- focus
- focus point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/6456—Spatial resolved fluorescence measurements; Imaging
- G01N21/6458—Fluorescence microscopy
Definitions
- the invention relates to a method for spatially limited excitation of an optical transition, wherein a focus area of an excitation light beam extending across a focus point, the wavelength of which is matched to the optical transition to be excited, with a spatial, an intensity minimum at the focus point and a plurality of intensity maxima on different sides of the focal point, an interference pattern of an influencing optical beam that somehow influences the optical transition, is split into partial beams and is superimposed in the focus area in the form of its focused partial beams from different directions with self-made excitation light beam.
- the invention relates to a device for carrying out such a method, with an excitation light source emitting the excitation light beam, with a first objective for focusing the excitation light beam onto the focus point, with an excitation light source emitting the excitation light beam, with a beam splitter splitting the excitation light beam into the partial beams, wherein one of the partial beams is focused on the focus point by the first lens, and with at least one second lens for focusing another of the partial beams on the focus point from a different direction in order to bring the partial beams into interference.
- EP 0 801 759 B1 In the field of fluorescence microscopy it is known from EP 0 801 759 B1 to effectively reduce the area in which a sample is excited for the spontaneous emission of separately detectable fluorescent light by partially overlapping a focus area of an excitation light beam with the focus areas of stimulation light beams , which cause a stimulated emission of the sample, whereby the excited energy state of the sample, from which the spontaneous emission of fluorescent light results, is again de-energized.
- the spontaneously emitted fluorescent light of interest can be separated from the light due to the stimulated emission on the basis of different wavelengths or different times of the emission.
- the spontaneously emitted fluorescent light collected from the effectively reduced focus area of the excitation light beam comes from an area which is smaller than the actual one The focus area of the excitation light beam is.
- Another starting point for reducing the effective focus area of a light beam is to generate an interference pattern in the focus area, for which purpose the excitation light beam is split into partial beams and the partial beams from different, preferably opposite directions are superimposed on one another in the focus area.
- the delimitations of the intensity maxima of this interference pattern have a lower limit of lambda / 4n.
- two further intensity maxima occur before and after the focal point in the common focus area of the two partial beams.
- the present invention is not limited to applications in fluorescence microscopes. Rather, it extends to all cases in which an optical transition can be excited by excitation light, the optical transition being able to be influenced in some way by de-excitation light. This includes the case that the de-energizing light is used to de-energize an energy state by stimulated emission. However, it is also included that the de-excitation light depopulates a basic state from which the optical transition could be excited with the excitation light alone. The optical transition to be excited can also trigger a photochemical process which is in some way prevented or at least hindered by the de-excitation light.
- de-excitation light or “de-excitation light beam” therefore has no other meaning in the context of this description than that the optical transition to be excited is influenced in some way. It is important for the invention to reduce the effective range of the excitation of the optical transition by using the de-excitation light beam. This does not mean, for example, that the superimposition of the de-excitation light beam with the excitation light beam requires simultaneous incidence in the focus area as long as the desired effect of the de-excitation light beam is still given in a chronological sequence.
- the object of the present invention is to demonstrate a method and a device of the type described at the outset, with which it is possible to reduce the effective excitation range of the optical transition by the excitation light beam to dimensions of significantly smaller lambda / 2n without this being necessary high adjustment effort is required, which stands in the way of a realization.
- this object is achieved according to the invention in that the wavefronts of the partial beams of the de-excitation light beam focused on the focus point from opposite directions are aberrated in the same way before focusing on the focus point, so that the intensity maxima of the interference pattern are spatially expanded on each of the sides of the focus point without eliminating the intensity minimum at the focus point.
- the focus area of the excitation light beam is overlaid with the interference pattern of the de-excitation light beam which is brought into interference with itself, the intensity maxima of the interference pattern forming on both sides of the focus point being lubricated in such a way that only an excitation of the optical transition to be excited is effectively limited around the focal point at which the interference pattern of the de-excitation light beam has an intensity minimum.
- this intensity minimum remains largely unaffected by the aberrations of the wave fronts of the partial beams of the excitation light beam.
- the aberrations of the wave fronts have an effect in front of and behind the focus point, at which there is no absolute symmetry between the partial beams, in that the intensity maxima of the interference pattern lose their narrow spatial limitation and expand, so that the entire focus area of the excitation light beam is outside the intensity minimum of the interference pattern is detectable at the focus point.
- the effective excitation of the optical transition to be excited is concentrated in a small area around the focal point, the dimensions of which fall far below the limit of lambda / 2n. Local resolutions in the range of Lambda / 10 and better can be reached.
- the partial beams of the de-excitation light beam are focused on the focus point from diametrically opposite directions in order to form the interference pattern.
- an angle in the range of 80 to 120 ° between the partial beams can also be present, for example.
- the excitation light beam is preferably not brought into interference with itself in the focus area, because this takes place without one additional significant advantage is. At the same time, however, it significantly increases the adjustment effort when carrying out the new method, because then two interference patterns have to be adjusted to one another.
- One criterion for a sufficient expansion of the intensity maxima of the interference pattern of the de-excitation light beam to cover the focus area of the excitation light beam outside the focus point is that the first and the second intensity maximum overlap on each side of the focus point. This means that an intensity zero between the first and the second intensity maximum disappears on each side of the focus point.
- the wavefronts of the partial beams are preferably aberrated in the same way.
- the wavefronts of the partial beams are aberrated in an identical and simple manner by aberrating the wavefronts of the de-excitation light beam before it is split into the partial beams. This results in a completely identical aberration of the wave fronts of the two partial beams, so that there is no risk that the intensity minimum in the interference pattern of the partial beams will be damaged at the focal point.
- a central region of the wavefronts can be phase-shifted relative to their edge region.
- the wave fronts of the partial beams of the de-excitation light beam are aberrated, areas of the wave fronts are phase-shifted from one another, it is preferred to carry out a phase shift by more than the coherence length of the de-excitation light beam so that the de-excitation light can no longer interfere destructively from the individual areas.
- the intensity minima of the interference pattern of the non-aberrated partial beams are particularly effective in their Intensity increased.
- its coherence length is synonymous with its pulse length.
- the partial beams are preferably focused on the focal point with identical optics.
- the optics are to be selected from the point of view of a large numerical aperture that goes as far as possible beyond 1.0. A half aperture angle of greater than 58 ° is preferred. Since the excitation light beam is also focused on the focus point by one of the two optics, the focus area of the excitation light beam already has the smallest possible spatial dimensions in the direction of the optical axis. The interference pattern of the two partial beams is also concentrated in this area.
- the excitation light beam and the de-excitation light beam can differ in their wavelength and / or the time of their incidence in the focus area and / or the shape of the laser pulses they have formed.
- a single laser can be used both as part of an excitation light source for the excitation light beam and as part of an excitation light source for the excitation light beam.
- the spatial resolution of the new method can additionally be improved by superimposing light intensities of a further de-excitation light beam in the focus area on the excitation light beam.
- This can be a further de-excitation light beam which differs from the first de-excitation light beam only in the type of aberration of the wave fronts of its partial beams, so that the new method is also implemented with it.
- it can also be an excitation light beam in which the wave fronts of its partial beams are not aberrated or which is not split into partial beams to form an interference pattern, so that it essentially makes use of the principles known from the prior art.
- Another addition to the new method is to carry out the method steps simultaneously in a plurality of focal areas lying next to and / or behind one another. This can be done, for example, by splitting the excitation light beam and the de-excitation light beam into a plurality of partial beams running side by side, which are focused in the plurality of focus areas.
- Known means for such a beam splitting are pinhole diaphragm and microlens arrays.
- the excitation light beam is used to excite a sample for the spontaneous emission of fluorescent light and the de-excitation light beam is used to change the excitation or to trigger stimulated emission of the sample, the spontaneously emitted fluorescent light being confocal detected.
- This procedure corresponds to fluorescence microscopy.
- a defined time sequence can also be used to separate the spontaneously emitted fluorescent light, in which the spontaneously emitted fluorescent light is only detected after the de-excitation light beam has decayed, which in turn follows the excitation light beam or at least decays later.
- synchronization measures are known per se.
- the excitation light beam can also be used to excite a state that is the initial state of a photochemical process, and the de-excitation light beam can be used to prevent this photochemical process.
- optical data carriers can be written to.
- a device of the type described at the outset is characterized in that in the beam path of the two partial beams focused on the focal point from opposite directions in front of the respective objective Optical element is arranged that aberrates the wavefronts.
- the first lens and the second lens preferably focus the partial beams from opposite directions onto the focus point.
- the possible beam paths are designed in such a way that the excitation light beam does not reach the focus area proportionally via the second lens.
- the optical element aberrating the wave fronts can be arranged in front of the beam splitter in the de-excitation light beam.
- the optical element aberrating the wavefronts may have an optical element that varies the phase of the de-excitation light across the wavefronts.
- a possible embodiment of the aberrating optical element has, for example, a phase delay plate in its center, as a result of which a phase stage is introduced into the wave fronts.
- other optical elements can also be used which cause other aberrations of the wave fronts, for example tilting or even curvatures of the wave fronts.
- the wavefronts are particularly preferably aberrating optical elements which are computer-addressable in order to set a desired aberration.
- optical elements are known and available in the form of active optical mirrors, for example as membrane mirrors with mechanical actuating elements, and of ferroelectric optical elements, for example as liquid crystal elements.
- the two objectives of the new device are preferably identical and have a half aperture angle of greater than 58 °.
- a phase adjustment element In order to adjust the intensity minimum of the interference pattern of the partial beams of the de-excitation light beam to the focal point, a phase adjustment element must be arranged in the beam path of one of the partial beams.
- This also includes a phase adjustment element in the form of a beam splitter that can be displaced with a piezo actuator, the displacement of which only affects the Run length affects one of the partial beams.
- only one active light source is provided, which directly serves either as an excitation light source or as an excitation light source.
- a passive nonlinear optical element can be used to form the respective other light source.
- the active light source is e.g. B. a pulsed laser and the passive nonlinear optical element a frequency doubling crystal or an optical parametric oscillator.
- an adjustable intensity attenuation means can be arranged in at least one of the two partial beams. This can be a cuvette with a solution made of an absorbent material. Copper sulfate, for example, is suitable.
- a detector for collecting fluorescent light can be arranged in a confocal arrangement to the focal point.
- FIG. 3 shows a first measurement result achieved with the new device in comparison with the measurement result of a confocal fluorescence microscope and Fig. 4 shows a second measurement result achieved with the new device again in comparison with the measurement result of a confocal fluorescence microscope.
- the device 1 shown schematically in FIG. 1 has an excitation light source 2 which emits an excitation light beam 3.
- the excitation light source 2 delivers laser pulses 4 with a wavelength of 554 nm and a pulse duration of 250 fs.
- the excitation light beam 3 is introduced via a mirror 5, through a first dichroic mirror 6 and a beam splitter 7 and via a second dichroic mirror 8 into a first objective 9 and from the objective 9 in the area of a sample 10 to a focal point 11, which is shown here an enlarged detail view next to the sample 10 is indicated, focused.
- a partial beam divided by the excitation light beam 3 in the beam splitter 7 is blocked by a wavelength-selective element 40 which does not transmit light with the wavelength of the excitation light beam 13.
- the excitation light beam 3 is actually not focused by the objective 9 onto the zero-dimensional focus point 11 but into a focus area 12 which has a certain spatial extent, in particular in the direction of the optical axis of the objective 9.
- a focus area 12 which has a certain spatial extent, in particular in the direction of the optical axis of the objective 9.
- the entire focus area 12 there is an excitation of the sample 10 into an excited energy state, from which the sample 10 spontaneously emits fluorescent light 13, back through the objective 9 and the dichroic mirror, whose transmission wavelength is matched to the wavelength of the fluorescent light 13, and reaches a detector 17 via a mirror 14 and through a lens 15 and a pinhole 16.
- the pinhole 16 is arranged confocal to the focal point 11 in order to increase the spatial resolution when registering the fluorescent light with the detector 17.
- the essential improvement in the local resolution in the detection of the fluorescent light is achieved here, however, with the aid of an de-excitation light beam 18 which comes from an de-excitation light source 19.
- the de-excitation light source 19 emits laser pulses 20 of 13 ps duration and with a wavelength in the range of 750 nm. While the wavelength of the excitation light beam 3 is matched to an excitation of an energy state of the sample 10, from which the sample spontaneously emits fluorescent light, the wavelength of the de-excitation light beam 18 is selected such that a stimulated emission of the sample 10 is triggered which triggers the de-energized state of energy.
- the area from which the detector 17 receives fluorescent light 13 can be locally limited to a narrow area around the focus point 11.
- the detector 17 or an upstream optical element can distinguish the stimulated emission of the sample 10 on the basis of a wavelength deviating from the fluorescent light 13, or a temporal distinction can be made by first a laser pulse 4 of the excitation light beam 3 and then a Laser pulse 20 of the de-excitation light beam 18 is emitted onto the sample 10 and only after the laser pulse 20 and the stimulated emission of the sample 10 triggered by it have decayed, the detector 17 is activated to receive the spontaneously emitted fluorescent light from the sample 10.
- the de-excitation light beam 18 is first guided through an optical element 21 which aberrates its wave fronts. Subsequently, the excitation light beam 18 is brought together with the excitation light beam 3 by the dichroic mirror 6, which reflects at the wavelength of the de-excitation light beam 18.
- the de-excitation light beam 18 is split into two partial beams 22 and 23 in the beam splitter 7.
- the partial beam 22 is guided like the excitation light beam.
- the partial beam 23 passes through the wavelength-selective element 40, which is transparent at the wavelength of the de-excitation light beam 18, and via a mirror 24 to a second objective 25, which is identical to the objective 9.
- the partial beam 23 is focused on the focus point 11 by the objective 25.
- the excitation light beam in the form of its partial beams 22 and 23 is superimposed on itself in the focus area 12.
- An interference pattern occurs.
- the phase position of the interference pattern with respect to the focus point 11 is set such that an intensity minimum is formed at the focus point 11. This is done by moving the beam splitter 7 in the direction of a double arrow 26, for example with a piezo actuator.
- the displacement of the beam splitter 26 only has an effect on the beam path of the partial beam 23 and thus on the relative phase position of the Partial beams 22 and 23 to each other.
- the interference pattern of the partial beams 22 and 23 is recorded by their aberrated wavefronts 27 in the sense that the intensity maxima are lubricated on both sides of the focus point 11 so that they merge into one another, so that the intensity minima of a higher order of the interference pattern are increased in intensity. This is explained in more detail below in connection with FIG. 3.
- FIG. 2 shows the mode of operation of the optical element 21 on incoming plane wavefronts 28 of the de-excitation light beam 18.
- the phase of the wavefronts 28 is locally delayed by a phase plate 29 in the center of the optical element 21, which results in the step-shaped aberrated wavefronts 27, which are located next to the focal point 11 are indicated in Fig. 1.
- other aberrations can be used and used in the same way. It is crucial that the flat wave fronts are deformed sufficiently to overlap the intensity maxima in the interference pattern of the partial beams 22 and 23 on both sides of the focal point 11.
- FIG. 3 shows in the upper part (a) the formation of an interference pattern 30 from plane wave fronts 28 incident on the focus area 12 via the objectives 9 and 25 according to FIG. 1.
- the focus point 11 is located on both sides in the middle of the interference pattern 30 each form 2 intensity maxima 31 and 32 of first and second order. These intensity maxima are sharply separated from one another by intensity minima 33 lying between them.
- Fig. 3 (b), below outlines the effect achieved by the aberrated wavefronts 27 on the interference pattern 30.
- the intensity maxima 31 and 32 of the first and second order are pulled apart a little from the focal point 11 and, in particular, expanded to such an extent that they overlap in the area of the intensity minimum 33 between them according to FIG.
- the detector signal 34 of the device 1 according to FIG. 1 is compared with the detector signal 35 of a corresponding confocal fluorescence microscope. What is striking is the significantly smaller half-value width 39 of the signal 34 around the position of the fluorescent layer.
- the half-value width here is only 46 +/- 5 nm. This is significantly smaller than one tenth of the wavelength of the excitation light beam.
- the half-width of the signal 35 of the confocal fluorescence microscope is an order of magnitude larger.
- FIG. 5 shows images of a bacterium whose membranes are marked with fluorescent dye.
- FIG. 5 (a) shows on the left a two-dimensional image of the bacterium and on the right the signal curve along a line 36 drawn in the image of the bacterium, which were each recorded with a confocal fluorescence microscope.
- 5 (b) shows, in comparison, corresponding recordings with the device 1 according to FIG. 1.
- the membranes 37 of the bacterium 38 are resolved much better and more sharply.
- a linear filtering of the signal according to FIG. 5 (b) can achieve an even greater resolution improvement.
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- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Microscoopes, Condenser (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Laser Surgery Devices (AREA)
- Laser Beam Processing (AREA)
- Lasers (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10154699A DE10154699B4 (de) | 2001-11-09 | 2001-11-09 | Verfahren und Vorrichtung zum räumlich eng begrenzten Anregen eines optischen Übergangs |
DE10154699 | 2001-11-09 | ||
PCT/EP2002/010456 WO2003040706A1 (de) | 2001-11-09 | 2002-09-18 | Verfahren und vorrichtung zum räumlich eng begrenzten anregen eines optischen übergangs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1444503A1 true EP1444503A1 (de) | 2004-08-11 |
EP1444503B1 EP1444503B1 (de) | 2005-04-13 |
Family
ID=7704928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02777141A Expired - Lifetime EP1444503B1 (de) | 2001-11-09 | 2002-09-18 | Verfahren und vorrichtung zum räumlich eng begrenzten anregen eines optischen übergangs |
Country Status (6)
Country | Link |
---|---|
US (1) | US7253893B2 (de) |
EP (1) | EP1444503B1 (de) |
JP (1) | JP4166697B2 (de) |
AT (1) | ATE293250T1 (de) |
DE (2) | DE10154699B4 (de) |
WO (1) | WO2003040706A1 (de) |
Families Citing this family (27)
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US5866911A (en) * | 1994-07-15 | 1999-02-02 | Baer; Stephen C. | Method and apparatus for improving resolution in scanned optical system |
EP1582858A1 (de) | 2004-03-29 | 2005-10-05 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Verfahren zur Anregung der Moleküle von einem ersten Zustand in einen zweiten Zustand mit einem optischen Signal |
DE102004039035A1 (de) * | 2004-04-07 | 2005-10-27 | EuroPhoton GmbH Gesellschaft für optische Sensorik | Verfahren und Vorrichtung zur Fluoreszenz-Lebensdauer-Imaging-Nanoskopie |
ITMI20040198U1 (it) | 2004-04-30 | 2004-07-30 | Agostino Ferrari Spa | Anta con apertura a pressione |
WO2006085391A1 (ja) * | 2005-02-09 | 2006-08-17 | Japan Fine Ceramics Center | 可干渉な波動による観察技術 |
DE102005012739B4 (de) | 2005-03-19 | 2010-09-16 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Verfahren zur Herstellung räumlicher Feinstrukturen |
DE102005013969A1 (de) | 2005-03-26 | 2006-10-05 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Verfahren zur mikroskopischen Untersuchung einer räumlichen Feinstruktur |
DE102005027896B4 (de) * | 2005-06-16 | 2012-03-15 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Verfahren zum optischen Messen einer Probe |
DE102006009831B4 (de) * | 2006-03-01 | 2013-07-04 | Leica Microsystems Cms Gmbh | Verfahren und Mikroskop zur räumlich hochauflösenden Untersuchung von Proben |
DE102006009833B4 (de) * | 2006-03-01 | 2009-01-08 | Leica Microsystems Cms Gmbh | Verfahren und Mikroskop zur räumlich hochauflösenden Untersuchung von Proben |
US7679741B2 (en) | 2006-03-01 | 2010-03-16 | Leica Microsystems Cms Gmbh | Method and microscope for high spatial resolution examination of samples |
DE102006026204A1 (de) * | 2006-05-31 | 2007-12-06 | Carl Zeiss Microimaging Gmbh | Mikroskop mit erhöhter Auflösung |
US8421035B2 (en) * | 2006-08-11 | 2013-04-16 | The Regents Of The University Of California | High-resolution microscope using optical amplification |
DE102006046369A1 (de) * | 2006-09-29 | 2008-04-03 | Carl Zeiss Microimaging Gmbh | Auflösungsgesteigerte Lumineszenzmikroskopie |
US7916304B2 (en) * | 2006-12-21 | 2011-03-29 | Howard Hughes Medical Institute | Systems and methods for 3-dimensional interferometric microscopy |
US8217992B2 (en) | 2007-01-11 | 2012-07-10 | The Jackson Laboratory | Microscopic imaging techniques |
DE102007025688A1 (de) * | 2007-06-01 | 2008-12-11 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Wellenlängen- oder polarisationssensitiver optischer Aufbau und dessen Verwendung |
US7772569B2 (en) | 2008-04-01 | 2010-08-10 | The Jackson Laboratory | 3D biplane microscopy |
DE102008019957B4 (de) | 2008-04-21 | 2015-04-30 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Verfahren zum Bestrahlen einer Probe mit Licht und Fluoreszenzlichtmikroskop mit einer Beleuchtungseinheit zum Bestrahlen einer Probe mit Licht |
DE102009031481A1 (de) | 2008-07-03 | 2010-02-11 | Ohnesorge, Frank, Dr. | Konzept für optische (Fernfeld-/Fresnel-Regime aber auch Nahfeld-) Mikroskopie/Spektroskopie unterhalb/jenseits des Beugungslimits - Anwendungen für optisches (aber auch elektronisches) schnelles Auslesen von ultrakleinen Speicherzellen in Form von lumineszierenden Quantentrögen - sowie in der Biologie/Kristallographie |
WO2010141608A1 (en) | 2009-06-02 | 2010-12-09 | Imflux Llc | Superresolution optical fluctuation imaging (sofi) |
US8547533B2 (en) | 2009-12-28 | 2013-10-01 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Composite probes and use thereof in super resolution methods |
EP2524259B2 (de) * | 2010-01-15 | 2021-08-18 | Koninklijke Philips N.V. | Sted-mikroskopiesystem |
DE102010007676A1 (de) | 2010-02-10 | 2011-08-11 | Ohnesorge, Frank, Dr., 91054 | Konzept für lateral aufgelöste Fourier Transformations Infrarot Spektroskopie unterhalb/jenseits des Beugungslimits - Anwendungen für optisches (aber auch elektronisches) schnelles Auslesen von ultrakleinen Speicherzellen in Form von lumineszierenden Quantentrögen - sowie in der Biologie/Kristallographie |
EP2535755A1 (de) | 2011-06-14 | 2012-12-19 | Ecole Polytechnique Fédérale de Lausanne (EPFL) | Kumulantmikroskopie |
EP3004848B1 (de) | 2013-06-03 | 2021-10-27 | LUMICKS DSM Holding B.V. | Verfahren und system zur abbildung eines molekülstranges |
GB2587809A (en) * | 2019-10-01 | 2021-04-14 | Sumitomo Chemical Co | Data storage method and composition |
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DE4416558C2 (de) * | 1994-02-01 | 1997-09-04 | Hell Stefan | Verfahren zum optischen Messen eines Probenpunkts einer Probe und Vorrichtung zur Durchführung des Verfahrens |
EP0801759B1 (de) * | 1994-02-01 | 2001-08-08 | Stefan Dr. Hell | Vorrichtung und verfahren zum optischen messen eines probenpunktes einer probe mit hoher ortsauflösung |
US6259104B1 (en) * | 1994-07-15 | 2001-07-10 | Stephen C. Baer | Superresolution in optical microscopy and microlithography |
DE19653413C2 (de) * | 1996-12-22 | 2002-02-07 | Stefan Hell | Rastermikroskop, bei dem eine Probe in mehreren Probenpunkten gleichzeitig optisch angeregt wird |
DE10012462B4 (de) * | 2000-03-15 | 2004-07-08 | Leica Microsystems Heidelberg Gmbh | Beleuchtungsvorrichtung für die konfokale Fluoreszenz-Rastermikroskopie |
US6844963B2 (en) * | 2000-03-23 | 2005-01-18 | Olympus Optical Co., Ltd. | Double-resonance-absorption microscope |
US7274446B2 (en) * | 2001-04-07 | 2007-09-25 | Carl Zeiss Jena Gmbh | Method and arrangement for the deep resolved optical recording of a sample |
DE10118355B4 (de) * | 2001-04-12 | 2005-07-21 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Verfahren und Vorrichtung zur Mehrphotonenanregung einer Probe |
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2001
- 2001-11-09 DE DE10154699A patent/DE10154699B4/de not_active Expired - Fee Related
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2002
- 2002-09-18 JP JP2003542911A patent/JP4166697B2/ja not_active Expired - Fee Related
- 2002-09-18 EP EP02777141A patent/EP1444503B1/de not_active Expired - Lifetime
- 2002-09-18 AT AT02777141T patent/ATE293250T1/de not_active IP Right Cessation
- 2002-09-18 DE DE50202806T patent/DE50202806D1/de not_active Expired - Lifetime
- 2002-09-18 WO PCT/EP2002/010456 patent/WO2003040706A1/de active IP Right Grant
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2004
- 2004-05-07 US US10/840,872 patent/US7253893B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
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See references of WO03040706A1 * |
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Publication number | Publication date |
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US7253893B2 (en) | 2007-08-07 |
DE50202806D1 (de) | 2005-05-19 |
WO2003040706A1 (de) | 2003-05-15 |
DE10154699A1 (de) | 2003-05-28 |
EP1444503B1 (de) | 2005-04-13 |
US20040207854A1 (en) | 2004-10-21 |
DE10154699B4 (de) | 2004-04-08 |
ATE293250T1 (de) | 2005-04-15 |
JP2005509157A (ja) | 2005-04-07 |
JP4166697B2 (ja) | 2008-10-15 |
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